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study on the development of photoelastic experimental hybrid method for colour isochromatics (¥°)

Jai-sug Hawong/ Jeong-hwan Nam/ Kyo-Hyoung Kim/ O-sung Kwon/ Gun Kwon/ Sung-han Park
The Journal of Mechanical Science and Technology, vol. 24, no. 6, pp.1279-1287, 2010

Abstract : Isochromatics obtained from photoelastic experiment shows the stress distributions of the full field of a structure under load. Therefore, stress distributions of the structure can be read at a glance through isochromatics. Many experimental data can be obtained from isochromatics which are then used in various photoelastic experimental hybrid methods for stress analysis. Monochromatic light has however, until now been used in the photoelastic experimental hybrid method to produce black and white isochromatics. The use of black and white isochromatics in photoelastic experimental hybrid method for black and white isochromatics requires high fringe orders in order to obtain sufficient experimental data for photoelastic hybrid techniques. Accordingly, this paper develops the photoelastic experimental hybrid method for color isochromatics in which a fringe order of 1 is enough to gather the experimental data of the photoelastic experimental hybrid method. The method was applied to validate stress concentration problems. Experimental results from this study indicated that the photoelastic experimental hybrid method for color isochromatics is more precise than the photoelastic experimental hybrid method for black and white isochromatics. The use of few fringe orders in photoelastic experimental hybrid method for color isochromatics can offer significant advantages in stress analysis of real components using reflective-type photoelastic experimental method.

Keyword : Photoelastic experimental hybrid method for white and black isochromatics; Photoelastic experimental hybrid method for color isochromatics; White and black isochromatics; Color isochromatics; Monochromatic light; White light; Stress concentration factor

 
 
 
 
 
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